1*2c2f96dcSApple OSS Distributions /*
2*2c2f96dcSApple OSS Distributions * Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
3*2c2f96dcSApple OSS Distributions *
4*2c2f96dcSApple OSS Distributions * @APPLE_LICENSE_HEADER_START@
5*2c2f96dcSApple OSS Distributions *
6*2c2f96dcSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*2c2f96dcSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*2c2f96dcSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*2c2f96dcSApple OSS Distributions * compliance with the License. Please obtain a copy of the License at
10*2c2f96dcSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this
11*2c2f96dcSApple OSS Distributions * file.
12*2c2f96dcSApple OSS Distributions *
13*2c2f96dcSApple OSS Distributions * The Original Code and all software distributed under the License are
14*2c2f96dcSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15*2c2f96dcSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16*2c2f96dcSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17*2c2f96dcSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18*2c2f96dcSApple OSS Distributions * Please see the License for the specific language governing rights and
19*2c2f96dcSApple OSS Distributions * limitations under the License.
20*2c2f96dcSApple OSS Distributions *
21*2c2f96dcSApple OSS Distributions * @APPLE_LICENSE_HEADER_END@
22*2c2f96dcSApple OSS Distributions */
23*2c2f96dcSApple OSS Distributions #include <errno.h>
24*2c2f96dcSApple OSS Distributions #include <sys/resource.h>
25*2c2f96dcSApple OSS Distributions #include <mach/port.h>
26*2c2f96dcSApple OSS Distributions
27*2c2f96dcSApple OSS Distributions extern int __iopolicysys(int, struct _iopol_param_t *);
28*2c2f96dcSApple OSS Distributions extern void _pthread_clear_qos_tsd(mach_port_t);
29*2c2f96dcSApple OSS Distributions
30*2c2f96dcSApple OSS Distributions int
getiopolicy_np(int iotype,int scope)31*2c2f96dcSApple OSS Distributions getiopolicy_np(int iotype, int scope)
32*2c2f96dcSApple OSS Distributions {
33*2c2f96dcSApple OSS Distributions int policy, error;
34*2c2f96dcSApple OSS Distributions struct _iopol_param_t iop_param;
35*2c2f96dcSApple OSS Distributions
36*2c2f96dcSApple OSS Distributions /* Do not sanity check iotype and scope, leave it to kernel. */
37*2c2f96dcSApple OSS Distributions
38*2c2f96dcSApple OSS Distributions iop_param.iop_scope = scope;
39*2c2f96dcSApple OSS Distributions iop_param.iop_iotype = iotype;
40*2c2f96dcSApple OSS Distributions error = __iopolicysys(IOPOL_CMD_GET, &iop_param);
41*2c2f96dcSApple OSS Distributions if (error != 0) {
42*2c2f96dcSApple OSS Distributions errno = error;
43*2c2f96dcSApple OSS Distributions policy = -1;
44*2c2f96dcSApple OSS Distributions goto exit;
45*2c2f96dcSApple OSS Distributions }
46*2c2f96dcSApple OSS Distributions
47*2c2f96dcSApple OSS Distributions policy = iop_param.iop_policy;
48*2c2f96dcSApple OSS Distributions
49*2c2f96dcSApple OSS Distributions exit:
50*2c2f96dcSApple OSS Distributions return policy;
51*2c2f96dcSApple OSS Distributions }
52*2c2f96dcSApple OSS Distributions
53*2c2f96dcSApple OSS Distributions int
setiopolicy_np(int iotype,int scope,int policy)54*2c2f96dcSApple OSS Distributions setiopolicy_np(int iotype, int scope, int policy)
55*2c2f96dcSApple OSS Distributions {
56*2c2f96dcSApple OSS Distributions /* kernel validates the indiv values, no need to repeat it */
57*2c2f96dcSApple OSS Distributions struct _iopol_param_t iop_param;
58*2c2f96dcSApple OSS Distributions
59*2c2f96dcSApple OSS Distributions iop_param.iop_scope = scope;
60*2c2f96dcSApple OSS Distributions iop_param.iop_iotype = iotype;
61*2c2f96dcSApple OSS Distributions iop_param.iop_policy = policy;
62*2c2f96dcSApple OSS Distributions
63*2c2f96dcSApple OSS Distributions int rv = __iopolicysys(IOPOL_CMD_SET, &iop_param);
64*2c2f96dcSApple OSS Distributions if (rv == -2) {
65*2c2f96dcSApple OSS Distributions /* not an actual error but indication that __iopolicysys removed the thread QoS */
66*2c2f96dcSApple OSS Distributions _pthread_clear_qos_tsd(MACH_PORT_NULL);
67*2c2f96dcSApple OSS Distributions rv = 0;
68*2c2f96dcSApple OSS Distributions }
69*2c2f96dcSApple OSS Distributions
70*2c2f96dcSApple OSS Distributions return rv;
71*2c2f96dcSApple OSS Distributions }
72